Population 887 · Census ACS 2020–24
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Population and households in Williamstown
Household size in Williamstown
| Period | Williamstown | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 3.53 | 2.44 | 2.68 |
| 2010–14 | 3.80 | 2.45 | 2.73 |
| 2015–19 | 3.39 | 2.43 | 2.71 |
| 2020–24 | 3.01 | 2.43 | 2.65 |
| Change | −0.52 | −0.01 | −0.03 |
Households in Williamstown are large by national standards, averaging 3.01 people against 2.65 for the U.S. That usually means more families with children at home. Since 2006–10, household size has dropped from 3.53, but in a place this small, survey estimates can swing a lot from one release to the next.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Williamstown
| Period | Williamstown | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 32.2 | 38.8 | 37.7 |
| 2010–14 | 30.8 | 39.3 | 38.6 |
| 2015–19 | 29.9 | 39.7 | 39.6 |
| 2020–24 | 36.3 | 39.8 | 40.1 |
| Change | +4.1 | +1.0 | +2.3 |
The median resident of Williamstown is 36.3 years old, a few years younger than the national median of 40.1.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Williamstown
| Period | Williamstown | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 14.8% | 9.5% | 12.3% |
| 2010–14 | 6.2% | 9.9% | 12.3% |
| 2015–19 | 12.2% | 10.0% | 11.6% |
| 2020–24 | 4.0% | 10.0% | 11.6% |
| Change | −10.8 pts | +0.6 pts | −0.6 pts |
Single parents head only 4.0% of households in Williamstown, well below the national share of 11.6%.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Williamstown
Renters in Williamstown
| Period | Williamstown | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 25.0% | 26.8% | 33.3% |
| 2010–14 | 17.8% | 28.2% | 35.6% |
| 2015–19 | 14.5% | 28.9% | 36.0% |
| 2020–24 | 20.3% | 28.3% | 34.8% |
| Change | −4.7 pts | +1.5 pts | +1.5 pts |
Only 20.3% of households in Williamstown rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Nearly half of owners (47.4%) have paid off their mortgages, above the national share of 39.8%.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Williamstown
| Period | Williamstown | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 9.2% | 8.7% | 11.4% |
| 2010–14 | 5.2% | 8.6% | 11.4% |
| 2015–19 | 1.6% | 9.4% | 11.1% |
| 2020–24 | 6.9% | 8.8% | 9.6% |
| Change | −2.2 pts | +0.1 pts | −1.8 pts |
Vacancy is on the low side in Williamstown: 6.9% of homes sit empty, against 9.6% nationally, which points to steady demand for housing.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Williamstown
| Period | Williamstown | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 1938 | 1965 | 1974 |
| 2010–14 | 1966 | 1967 | 1975 |
| 2015–19 | 1944 | 1969 | 1977 |
| 2020–24 | 1967 | 1971 | 1980 |
| Change | +29 | +6 | +6 |
Williamstown is a place of older homes: half were built before 1967, while the national median is 1980. That means established neighborhoods, and more houses that may need updating.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Williamstown
| Period | Williamstown | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | $656 | $669 | $965 |
| 2010–14 | $714 | $732 | $1,040 |
| 2015–19 | $1,059 | $821 | $1,213 |
| 2020–24 | $1,363 | $1,020 | $1,571 |
| Change | +$707 | +$351 | +$606 |
Rent in Williamstown runs $1,363 a month at the median, utilities included, below the U.S. median of $1,571. Even so, rents here are higher than in Iowa as a whole ($1,020). The typical renter here spends 46.5% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Williamstown
Bachelor's degrees in Williamstown
| Period | Williamstown | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 8.6% | 26.5% | 28.4% |
| 2010–14 | 21.8% | 27.9% | 29.6% |
| 2015–19 | 18.6% | 29.3% | 32.1% |
| 2020–24 | 21.8% | 32.3% | 35.6% |
| Change | +13.2 pts | +5.8 pts | +7.2 pts |
College degrees are relatively uncommon in Williamstown: 21.8% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Williamstown
| Period | Williamstown | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 65.4% | 90.4% | 84.9% |
| 2010–14 | 62.3% | 91.4% | 86.1% |
| 2015–19 | 70.7% | 92.1% | 87.7% |
| 2020–24 | 77.3% | 93.0% | 89.3% |
| Change | +11.9 pts | +2.7 pts | +4.3 pts |
More than one in five adults in Williamstown never finished high school, well above the national share: only 77.3% have a diploma or equivalent, against 89.3% nationally.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Williamstown
| Period | Williamstown | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 3.9% | 5.2% | 8.1% |
| 2010–14 | 0.3% | 5.4% | 9.4% |
| 2015–19 | 1.9% | 3.7% | 5.6% |
| 2020–24 | 0.0% | 3.7% | 5.4% |
| Change | −3.9 pts | −1.5 pts | −2.7 pts |
The survey found almost no one in Williamstown out of work and looking, against 5.4% of the labor force nationally. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Williamstown compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Williamstown | 3.01 | 36.3 | 4.0% | 20.3% | 6.9% | 1967 | $1,363 | 21.8% | 77.3% | 0.0% |
| Kalona | 2.56 | 39.3 | 7.0% | 27.9% | 5.6% | 1979 | $801 | 33.6% | 88.7% | 1.4% |
| Sharon Center | 3.53 | 28.8 | 2.4% | 33.3% | 4.5% | 1955 | $1,363 | 32.3% | 79.1% | 0.0% |
| Windham | 2.48 | 40.2 | 9.5% | 22.7% | 5.6% | 1972 | $1,311 | 25.6% | 90.3% | 0.0% |
| Wellman | 2.40 | 37.9 | 6.7% | 24.0% | 6.5% | 1971 | $811 | 23.9% | 92.0% | 1.3% |
| Richmond | 2.89 | 38.5 | 7.6% | 15.3% | 1.9% | 1987 | $926 | 29.3% | 95.0% | 2.9% |
| Riverside | 2.74 | 39.1 | 9.4% | 16.6% | 5.8% | 1978 | $912 | 33.4% | 93.9% | 1.9% |
| Hills | 2.18 | 38.7 | 8.9% | 39.7% | 5.3% | 1971 | $1,134 | 26.1% | 95.4% | 2.9% |
| Parnell | 2.52 | 46.2 | 14.0% | 15.6% | 1.0% | 1980 | $866 | 34.9% | 93.5% | 0.5% |
| Oxford | 2.58 | 33.6 | 12.1% | 19.8% | 3.3% | 1978 | $1,193 | 34.7% | 98.8% | 9.3% |
| Tiffin | 2.38 | 32.7 | 7.0% | 17.4% | 0.6% | 2011 | $1,200 | 59.8% | 100.0% | 0.5% |
All figures 2020–24.
Cities with similar populations: Footville, WI · Swifton, AR · Sumner, OR · Sulphur, SD · Stratton, CO · Strasburg, IL · Greenwood, IL · Goretown, SC · Golden, MO · Golden Beach, FL
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Williamstown. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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